Nut-lock.



J. NOLAN.

NUT LOCK.

APPLICATION FILED APR. 14. 1914. 1

l ,2 1 5,97 1 Patented Feb. 13, 1917.

J. Nolan.

JOHN NOLAN, OF MGLINE, ILLINOIS.

NUT-LDCK.

Apphlcation filed April 14, 1914.

To all whom it may concern:

Be it known that 1, JOHN Nonarr, a citizen of the United States,residing at Moline, in the county of Rock Island and State of Illinois,have invented certain new and useful Improvements in Nut-Locks, of whichthe following is a specification.

This invention relates to nut locks, and more particularly to a nutlocking washer of simple and inexpensive construction.

The inventionhas for its object to pro vide a lock washer which willeffectively hold the nut against rotation with relation to an object,while the bolt or screw is being adjusted.

Another object is the provision of a loclr washer having object-engagingribs which are so a ranged as to prevent breakage or splitting ofwoodwork, when the washer is used in connection with furniture or otherwooden objects.

With these and other objects in view, the invention consists in thenovel construction, arrangement and formation of parts, as will behereinafter specifically described, claimed and illustrated in theaccompanying drawings, in which,

Figure 1 represents a transverse central sectional view through the nutlock applied to use,

Fig. 2 represents a top plan view of the locking washer,

Fig. 3 represents a bottom plan view thereof,

Fig. 4 represents a plan view of the Washer engaging face of the clampedobject, showing the parallel grooves therein adapted to receive the ribsof the washer.

Referring to the drawing in detail, when in similar reference numeralsdesignate corresponding parts throughout the several views, the numeral5 indicates a bolt of any approved type having a suitable head 6 at oneend and formed with suitablethreads on the the shank thereof. Theobjects to be clamped on bolt are indicated by the numerals 7 and 8 andthe shank of the bolt 5 is positioned through a suitable openingtherein. The object 7 is formed on its outer face with a pair ofparallel grooves 9 adapted to receive the parallel ribs 10 formed onSpecification of Letters Patent.

Patented Feb. 13, 1917. Serial No. 831,804.

the under face of the lock washer 11 formed with suitable centralopening 12 adapted to receive the shank of the bolt 5.

A nut 13 is adapted to cooperate with the threaded shank of the bolt 5and secure the objects 7 and 8 and the inner edges 14 thereof arebeveled, as shown in Fig. 1. The inner portion of the nut 13 is adaptedto seat in a depression 15 formed in the outer face of the washer 11 andshaped conformably with the nut 13. The approximate depth of thedepression 15 as compared with the thickness of the washer 11 is shownin. Fig. 1.

In use. the bolt 5 is positioned through the ob ects 7 and 8, and thewasher 11 is slipped upon the threaded terminal of the bolt and the ribs10 thereof are engaged in the grooves 9 in the object, thus securing thewasher against rotary movement with relation to the object. The nut 13is subsequently fitted upon the terminal. of the bolt and the lat er ismoved longitudinally until the nut snugly fitted in the depression 15,the walls of which secure the nut against rotary movement with relationto the washer. The nut being thus held against rotary movement withrelation to the ob jects 7 and 8, the bolt 5 may be ad usted by asuitable tool applied to the head 6, so as to firmly clamp the objects 7and 8 between the bolt head and the nut 13. The ribs 10 on the washerare arranged directly under and in parallel relation to two of theopposed side walls of the depression 14, so as to insure againstbreakage of the objects 7 and 8 due to the strain exerted by the ribs 10en aging the object on opposite sides of the bolt-receiving aperturetherein. The screw or bolt 5 may be conveniently tightened or adjustedfrom time to time by a suitable tool applied to the head 6, and the nutis securely held against rotary movement with relation to the objectsduring adjustment thereof by the washer 11.

That I claim is In combination, a bolt, a head atone end of said bolt, anut fitted upon the bolt, a circular washer positioned upon the bolt inadvance of the nut having a flat inner objectengaging face, and adepression in the outer face shaped conformably with and non-ro- Intestimony whereof I aflix my signature tatably receiving the nut, andspaced parin presence of two Witnesses. allel ribs formed on the innerface of the nut JOHN NOLAN. V underlying and parallel with two of theop- \Vitnesses:

5 posed side Walls of the depression. and the S. MCCLURG, correspondingside faces of the nut. RUTH NELSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G. 4

